A trivial solution is \(\tilde{\gamma }_0=0\)  and \(\tilde{\gamma }_1=I\) . This is what we will call the homogeneous case, keeping with the nomenclature borrowed from [1]}. We will briefly comment on this later in the paper. The non-trivial solution has the form
\(\tilde{\gamma }_0 =\begin{pmatrix} 0 & 0 \\a & 0\end{pmatrix}\qquad \tilde{\gamma }_1 =\begin{pmatrix}1 & 0 \\0 & -1\end{pmatrix}\) 
